Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Effects of bilateral STN lesions on performance in the PR task evaluated by the mean ± SEM last ratio reached during the session (i.e., breaking point) (A) and the rate of responding measured as the total number of lever presses per minute (±SEM) (B). Sham control animals (n= 8; open circles) and STN-lesioned animals (n = 7; filled squares) performance is illustrated over 10 sessions.
